Key switch



FIG. 1 is a front view of the key switch of the present invention;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a rear, top perspective view thereof. 

The ornamental design for a key switch, as shown. 